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- Jwfe@ 602% one, E, to to the shaft H. (The drawingsare on a scale of one' to eight.) The friction-ivheel-E is loosely attached to the shaft H, and revolves the shaft by means of a friction-clutch, G, which is made to bear against the side of the wheel E by means .of a key, 71 or other suitable device, and may bear directly against the wheel, or a separato piece, j, may be interposed, and replaced when worn. This piece is supported against the clutch by a cushion or spring, Z. The chain I, by which the brake-levers are operated, is attached to the shaft H. The arms J are also attached to the shaft H, at the journals, or to the supportin.g-a`rms, near the journals, and carried to a rook-shaft, K, and pivoted at a to a short arm, b, attached to the rock-shaft. These arms may be bent just back of the pivot a, as shownvin iig. 2, so that when the rock-shaft is turned, and the friction wheels E F brought in contact, the line of force or draught will beas nearly through the centre of the rockshaft as is practicable to permit ot' the automatic return of the arms J and whceLE. By this arrangement, f

when the shaft K is turned the friction-wheels are held in contact with little power.V

Y We place the arms J as nearly horizontal as the structure of the truck-frame will permit, so that the wheel E may be brought into contact with the wheel Fvby the use of the least practicable force.; and the chain I is extended from the shaft H to the brake-lever in a line forming such an angle with a line produced between the centres of the shaft H and axle A, when the wheels E and F are held in contact, that the strain upon the chain I, in winding the same on the shaft Hte set the brakes, operating to increase that angle, increases the pressure of the wheels E and F upon each other, until the wheel vE ceases to revolve the shaft H, by slipping in the friction-clutch, hereinafter described. This-angle may be about ninety degrees, and may be largeror smaller, according to circumstances. The direction'ot` the chain is such that when the oord N isA relaxed the strain on the chain I will return the wheel E and the'rock-shaft K to their positions at rest. When the brakelever is set at an angle, as shown, or is vertical, the chainwill have the proper direction. When necessary, a roller or guide, z', is attached to the truck, to produce the angle. The rock-shaft K is provided with a slotted or sliding arm, L, attached at or nearly at a right angle-with the short arm b, so that when at rest it inclines towards theshaft H, and the slide or ringcof the cord N will be at .the point of the slot in the ovni er lever L nearest to the rock-shaft K. The lengthl of the slotted or variable arm L on the rock-shaft II,and the length of the slot in the arm, depend onithe force required to bring and hold the wheel Ein contact with the wheel F; and this/arm L should be so attached to the rock-shaft that when the friction-wheels are in contact it willI stand or hang at a right' angle with the cord N. Near this lever we attach to thc truck a pushing-arm or prop, c, (through the end of which the cord N passes operated by a short cord, Nf, tig. 2, attached to the prop at ci, andalso to the main cord N, so that when lthe rock-shaft commences to turnythc pushing-arm or prop will commence to slide the cord N towards the outer end of thclever L, ani'lgradually increase the' leverage `without increasing the travel of thecord N longitudinally, so that this apparatus can be operated on a large number of cars withoutV materially increasing the slack of the cord. The slot in the arm L, the arui c, the ring 7c,

and the cord N, are none ot themessential parts of our improvements, but are-used only for the purpose of diminishing the quantity of motion of the operating-cord, The cordN extends from the arm L to some convenient point for reaching the bellcord or other operating-cord, and is there provided with a sheave, through which the operating-cord passes, ina bight or loop, so arranged ,that the rock-shaft will be turned by pulling'- the operating-cord in either direction.

We do not ooniine ourselves to the device described for operating our apparatus, as it is evident that a earn or other device may be effectively used.

i In operation, the engineer, or any one or more persons anywhere on the train, by pulling the operatingcord, will shorten the bight or loop therein, and pull the cord N, thereby turning the rock-shaft K, and bringing the arm c to a position which slides the cord N to the outer end of L. The turning of the shaft K turns the short arm b forward, which brings the arms J forward, and the friction-Wheels.V in contact. The ehaiii then commences to wind'on the shaft H, and as soon as the brakes begin to press upon the wheels, the pressure of the friction-wheel E upon wheel F will increased, in consequence of the angle at which the chain is plaeed, as described, and the greater the pressure on wheels B, the greater will be the pressure of E upon F.

To prevent breaking anypart, the pressure of the friction-clutch Gr i's so adjusted that when the required pressure is produced the wheel E will revolve on the shaft H and against the clutch, without winding the chain on the shaft, andthe required pressure can be continued for any length of time, and vibrations will be adjusted by the jointed arms o u. When the cord N is released, the reaction and the action ofthe springs e of the' arms o u will return all the parts to their original positions, and all will be at o-noe ready to be again used.

We thus provide a simpleand effective mechanism for operating car-brakes, which is certain in operation, eli'ective in action, easily attached to any car, not liable to get out of repair, and always'in readiness for use.

aving thus fully described our invention, whatwe claim as new, and desire to secure by Letters Patent, is il.y The combination of the chain l, Wheel E, and shaft H, with the jointed arms t). o, and with an arm or arms J, all operating substantially in the manner and for the purposes speciiicd.

2. The combination of the cord N wit-h the rock-shaft K, with its arms L and In, and the arms .Tropenating substantially in the manner and for the purposes specified.A

3.- 'lhe combination of the cord N and prop C with the cord N and arm L, operating substantially inthe manner and for the purposes specified.

` JOS. H. MOORE,

JOSEPH E. GARY.

litnesses:

L. L. BOND, E. A. WEST. 

